A pipeline at its core is a sequence of Functions applied to a data set. Hence function definitions are crucial. Since functions are resources as well, we can define functions just as easily as we define resources. Each function definition defines its parameters.

• FunctionParameters^?
• FunctionSingleton - a FunctionSingleton is an atomic function. This essentially wraps around a single executable.
• CompositeFunctions^?
  • FunctionPipeline - a FunctionPipeline is composed (recursively) of multiple functions.
  • BranchedFunction^?
  • IteratedFunction^?